<!doctype html>
<html>
<head>
<meta charset="utf8">
<link rel="help" href="https://url.spec.whatwg.org/#dom-urlsearchparams">
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<script>
// This test is Chromium-specific because it involves GC.

promise_test(async () => {
  let params = new URLSearchParams('param0=0&param1=1');
  const seen = [];
  for (const param of params) {
    const [key, value] = param;
    if (key === 'param0') {
      params = undefined;
      // It takes two iterations of GC before Oilpan objects are collected.
      for (let i = 0; i < 2; ++i) {
        gc();
        await new Promise(resolve => setTimeout(resolve, 0));
      }
    }
    seen.push(key);
  }
  assert_array_equals(seen, ['param0', 'param1'],
                      'both parameter should be seen');
}, 'URLSearchParams should not be garbage collected while iterator exists');

</script>
</head>
</html>
